Remove foreign function wrappers#8535
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nikomatsakis wants to merge 2 commits intorust-lang:masterfrom
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src/libextra/extra.rs
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@nikomatsakis - bitrotted. |
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Aug 19, 2013
…, r=graydon Long-standing branch to remove foreign function wrappers altogether. Calls to C functions are done "in place" with no stack manipulation; the scheme relies entirely on the correct use of `#[fixed_stack_segment]` to guarantee adequate stack space. A linter is added to detect when `#[fixed_stack_segment]` annotations are missing. An `externfn!` macro is added to make it easier to declare foreign fns and wrappers in one go: this macro may need some refinement, though, for example it might be good to be able to declare a group of foreign fns. I leave that for future work (hopefully somebody else's work :) ). Fixes #3678.
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My goodness sir. Thank you. |
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Woohoo! 💃 |
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Sorry for question -- I'm completely new to Rust -- does this mean FFI calls have no overhead now (comparing to ordinary functions)? |
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Long-standing branch to remove foreign function wrappers altogether. Calls to C functions are done "in place" with no stack manipulation; the scheme relies entirely on the correct use of
#[fixed_stack_segment]to guarantee adequate stack space. A linter is added to detect when#[fixed_stack_segment]annotations are missing. Anexternfn!macro is added to make it easier to declare foreign fns and wrappers in one go: this macro may need some refinement, though, for example it might be good to be able to declare a group of foreign fns. I leave that for future work (hopefully somebody else's work :) ).Fixes #3678.